-- linked to NCTM ObjectivesGRADES PRE-K – 12 -- You
will find Lesson Plans- wonderfully
integrated with handouts, web resources and projects, Selected Web Resources, Interactive
Math Tools, i-Math Investigations, and Inquiry on Practice -
Excellent source for all math-related materials and resources. http://illuminations.nctm.org/index.html
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Excel Interactive Projects – 5 – 12 Grades
Fractions, Ratios,
Coins & Dice, Equations, Probability, Projectile Motion, Fibonacci,
Distribution – from the Center for Technology and Teacher Education -- The Curry School of Education, University of Virginia,
is one of six recipients of the first ISTE Distinguished Achievement Award for
integration of technology into its teacher education program, awarded at this
year's AACTE conference.
http://teacherlink.org/content/math/interactive/interactiveexcel.html
Base
10 Blocks Program -- Grades 1 – 6
Interactive
Base Ten Blocks, lesson plans and activities. Students work online with base
ten blocks
http://www.arcytech.org/java/b10blocks/description.html
Learning
Planet – Grades Pre K - 3 Interactive games – some great games for
number recognition, matching, clock and number operations – easy access.Interactive pattern blocks for fractions and geo patterns. This program can be used to familiarize oneself with the different shapes, their relations, and their proportions. By rotating them, one can also get a good feel for their symmetry. But the real purpose behind the program is to use it as a tool to learn and practice fractions.
Math Games, Teacher Resources, Create an
online Quiz: Grades 3 – 8 http://www.funbrain.com/
http://www.funbrain.com/brain/MathBrain/MathBrain.html– Grades 5 - 8
Tutorials with interactive practice, homework help and worksheets - 39 free self-paced lessons with a total of 70 available on a CD you can purchase. You can print puzzles and worksheets for use off line. Join discussions in our moderated Forums. - Topics: Understanding Percent; Pre-Algebra; Probability; Integers; Intro to Statistics; Number Theory; Circles; Polygons http://www.mathgoodies.com 
Welcome to Math Cats! 
place value, addition
and subtraction
multiplication
and division
conversions,
measurement, estimation, probability, statistics, fractions, coordinate
geometry
real-life math and
offline math crafts and activities
online
math art and geometry
potpourri:
math trivia, terminology, animations, spatial reasoning, randomization, fun
writing
idea banks
for "older cats"
http://www.primarymath.org/Pm.jsp